Comparison of conventional laryngoscope with video laryngoscope for tracheal intubation in patients with non difficult airways

Abstract

ABSTRACT Background and aims Direct laryngoscopy necessitates the alignment of the oropharyngeal-laryngeal axis. This study aimed to compare direct laryngoscopy with a Macintosh blade to King-Vision Video laryngoscope for tracheal intubation in patients with non-difficult airways who were scheduled for elective operations under general anaesthesia. Methods In this prospective randomised clinical trial,118 adults with ASA I and II requiring endotracheal intubation for surgeries under general anaesthesia, were enrolled and randomised into either of the two groups(Group DL-direct laryngoscope and Group VL-video laryngoscope), where they were intubated using King Vision or direct laryngoscope with Macintosh blade. The Primary objective was to compare time to intubate, Visualization of the laryngeal view by Cormack-Lehane grade and Successful first attempt. Secondary objective were to record the number of intubation failure, number of attempts, change of anaesthetist and use of adjunct equipment and the complications such as oropharyngeal trauma, neck pain, dysphagia, hoarseness.